ChangeHandler
Attributes
- Graph
- Supertypes
- class Objecttrait Matchableclass Any
Members list
Value members
Abstract methods
Implement this method to perform additional processing in the same transaction as the Durable State upsert or delete.
Implement this method to perform additional processing in the same transaction as the Durable State upsert or delete.
The process
method is invoked for each DurableStateChange
. Each time a new Connection
is passed with a new
open transaction. You can use createStatement
, update
and other methods provided by the R2dbcSession. The
results of several statements can be combined with CompletionStage
composition (e.g. thenCompose
). The
transaction will be automatically committed or rolled back when the returned CompletionStage
is completed. Note
that an exception here will abort the transaction and fail the upsert or delete.
The ChangeHandler
should be implemented as a stateless function without mutable state because the same
ChangeHandler
instance may be invoked concurrently for different entities. For a specific entity (persistenceId)
one change is processed at a time and this process
method will not be invoked with the next change for that
entity until after the returned CompletionStage
is completed.